‘A Sacred Oath: Memoirs of a Secretary of Defense During Extraordinary Times’ is a compelling non-fiction work by Mark T. Esper, former U.S. Secretary of Defense. This memoir offers an insider’s perspective on pivotal moments in recent history, detailing the challenges and decisions faced during his tenure. Esper’s narrative is enriched by his candid reflections and insights into the complexities of national security, leadership, and governance. This book is essential for readers interested in political memoirs, contemporary history, and the intricacies of defence strategy, providing a unique window into the extraordinary times that shaped global affairs.